we have a RAID 10 datastore (4x SAS) on an IBM x3650M2 server but our VMWare ESX 4.xx server does not see this datastore.

Does anybody knows whats wrong there?

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Is the array controller on the HCL? The only SAS array I see supported from IBM for esx 4 is model 1820N00. If it's built in servraid make sure its one of these Also note:

"SAS 2.0 controllers are supported only with VMware ESX/ESXi 4.0u1 and newer releases"

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It´s a ServeRaid M5014 SAS/SATA Controller. The ESX regognizes a RAID 5 but not RAID 10.

I can´t find ESX4.0U1. Where is it downloadable?

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Here is is on the HCL; vmware.com/resources/compatibility/… – Chopper3 Feb 10 '10 at 13:21
Thank you for the link. Why isn´t the update shown in the vSphere Host Update Utility? – Tom Feb 10 '10 at 14:06
I don´t know why but now I see the disk in the LUN configuration. – Tom Feb 10 '10 at 14:07
Don't know, I use VCUM not the HUU. – Chopper3 Feb 10 '10 at 14:20
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